Ran into a bug. When you open the screen where you are given the option to curse a weapon you cannot exit (ESC key doesnt work) until you do and if you dont have any souls for it you're stuck there, you can only close the game and re-start from the last save.
Lost a bit of progress from this, hope to see this fixed.
Edit: Nvrmd I'm an idiot, you just gotta scroll really far and you see the option "Nevermind", sorry